1957221

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{661}}^1$

素因数の和:721

約数の個数: 24

約数和(自身を含む): 3304704

約数和(自身を除く): 1347483

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 661, 987, 1983, 2961, 4627, 5949, 13881, 31067, 41643, 93201, 217469, 279603, 652407, 1957221]

約数ペア:

[(1, 1957221), (3, 652407), (7, 279603), (9, 217469), (21, 93201), (47, 41643), (63, 31067), (141, 13881), (329, 5949), (423, 4627), (661, 2961), (987, 1983)]